codecvt_utf8_length.pass.cpp
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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <codecvt>
// template <class Elem, unsigned long Maxcode = 0x10ffff,
// codecvt_mode Mode = (codecvt_mode)0>
// class codecvt_utf8
// : public codecvt<Elem, char, mbstate_t>
// {
// // unspecified
// };
// int length(stateT& state, const externT* from, const externT* from_end,
// size_t max) const;
#include <codecvt>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
{
typedef std::codecvt_utf8<wchar_t> C;
C c;
char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
std::mbstate_t m;
int r = c.length(m, n, n+4, 1);
assert(r == 4);
n[0] = char(0xE1);
n[1] = char(0x80);
n[2] = char(0x85);
r = c.length(m, n, n+3, 2);
assert(r == 3);
n[0] = char(0xD1);
n[1] = char(0x93);
r = c.length(m, n, n+2, 3);
assert(r == 2);
n[0] = char(0x56);
r = c.length(m, n, n+1, 3);
assert(r == 1);
}
{
typedef std::codecvt_utf8<wchar_t, 0x1000> C;
C c;
char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
std::mbstate_t m;
int r = c.length(m, n, n+4, 1);
assert(r == 0);
n[0] = char(0xE1);
n[1] = char(0x80);
n[2] = char(0x85);
r = c.length(m, n, n+3, 2);
assert(r == 0);
n[0] = char(0xD1);
n[1] = char(0x93);
r = c.length(m, n, n+2, 3);
assert(r == 2);
n[0] = char(0x56);
r = c.length(m, n, n+1, 3);
assert(r == 1);
}
{
typedef std::codecvt_utf8<wchar_t, 0xFFFFFFFF, std::consume_header> C;
C c;
char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1), char(0x80), char(0x80), char(0x83)};
std::mbstate_t m;
int r = c.length(m, n, n+7, 1);
assert(r == 7);
n[0] = char(0xE1);
n[1] = char(0x80);
n[2] = char(0x85);
r = c.length(m, n, n+3, 2);
assert(r == 3);
n[0] = char(0xEF);
n[1] = char(0xBB);
n[2] = char(0xBF);
n[3] = char(0xD1);
n[4] = char(0x93);
r = c.length(m, n, n+5, 3);
assert(r == 5);
n[0] = char(0x56);
r = c.length(m, n, n+1, 3);
assert(r == 1);
}
{
typedef std::codecvt_utf8<char32_t> C;
C c;
char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
std::mbstate_t m;
int r = c.length(m, n, n+4, 1);
assert(r == 4);
n[0] = char(0xE1);
n[1] = char(0x80);
n[2] = char(0x85);
r = c.length(m, n, n+3, 2);
assert(r == 3);
n[0] = char(0xD1);
n[1] = char(0x93);
r = c.length(m, n, n+2, 3);
assert(r == 2);
n[0] = char(0x56);
r = c.length(m, n, n+1, 3);
assert(r == 1);
}
{
typedef std::codecvt_utf8<char32_t, 0x1000> C;
C c;
char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
std::mbstate_t m;
int r = c.length(m, n, n+4, 1);
assert(r == 0);
n[0] = char(0xE1);
n[1] = char(0x80);
n[2] = char(0x85);
r = c.length(m, n, n+3, 2);
assert(r == 0);
n[0] = char(0xD1);
n[1] = char(0x93);
r = c.length(m, n, n+2, 3);
assert(r == 2);
n[0] = char(0x56);
r = c.length(m, n, n+1, 3);
assert(r == 1);
}
{
typedef std::codecvt_utf8<char32_t, 0xFFFFFFFF, std::consume_header> C;
C c;
char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1), char(0x80), char(0x80), char(0x83)};
std::mbstate_t m;
int r = c.length(m, n, n+7, 1);
assert(r == 7);
n[0] = char(0xE1);
n[1] = char(0x80);
n[2] = char(0x85);
r = c.length(m, n, n+3, 2);
assert(r == 3);
n[0] = char(0xEF);
n[1] = char(0xBB);
n[2] = char(0xBF);
n[3] = char(0xD1);
n[4] = char(0x93);
r = c.length(m, n, n+5, 3);
assert(r == 5);
n[0] = char(0x56);
r = c.length(m, n, n+1, 3);
assert(r == 1);
}
{
typedef std::codecvt_utf8<char16_t> C;
C c;
char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
std::mbstate_t m;
int r = c.length(m, n, n+4, 1);
assert(r == 0);
n[0] = char(0xE1);
n[1] = char(0x80);
n[2] = char(0x85);
r = c.length(m, n, n+3, 2);
assert(r == 3);
n[0] = char(0xD1);
n[1] = char(0x93);
r = c.length(m, n, n+2, 3);
assert(r == 2);
n[0] = char(0x56);
r = c.length(m, n, n+1, 3);
assert(r == 1);
}
{
typedef std::codecvt_utf8<char16_t, 0x1000> C;
C c;
char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
std::mbstate_t m;
int r = c.length(m, n, n+4, 1);
assert(r == 0);
n[0] = char(0xE1);
n[1] = char(0x80);
n[2] = char(0x85);
r = c.length(m, n, n+3, 2);
assert(r == 0);
n[0] = char(0xD1);
n[1] = char(0x93);
r = c.length(m, n, n+2, 3);
assert(r == 2);
n[0] = char(0x56);
r = c.length(m, n, n+1, 3);
assert(r == 1);
}
{
typedef std::codecvt_utf8<char16_t, 0xFFFFFFFF, std::consume_header> C;
C c;
char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1), char(0x80), char(0x80), char(0x83)};
std::mbstate_t m;
int r = c.length(m, n, n+7, 1);
assert(r == 3);
n[0] = char(0xE1);
n[1] = char(0x80);
n[2] = char(0x85);
r = c.length(m, n, n+3, 2);
assert(r == 3);
n[0] = char(0xEF);
n[1] = char(0xBB);
n[2] = char(0xBF);
n[3] = char(0xD1);
n[4] = char(0x93);
r = c.length(m, n, n+5, 3);
assert(r == 5);
n[0] = char(0x56);
r = c.length(m, n, n+1, 3);
assert(r == 1);
}
return 0;
}